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Eidhoff, A. , Stief, S. , Voeth, M. , Gundlach, S.. "Drivers of Digital Product Innovation in Firms: An Empirical Study of Technological, Organizational, and Environmental Factors". World Academy of Science, Engineering and Technology, Open Science Index 114, International Journal of Economics and Management Engineering (2016), 10(6), 1888 - 1892.